libdpkg: Make dpkg_locales_init() a public symbol

lib/dpkg/libdpkg.map

@@ -3,6 +3,9 @@ global:
 	# Error reporting
 	dpkg_error_destroy;
 
+	# Charset and string functions
+	dpkg_locales_init;
+
 	# Program name
 	dpkg_set_progname;
 	dpkg_get_progname;
@@ -67,8 +70,6 @@ LIBDPKG_PRIVATE {
 	fgets_checked;
 
 	# Charset and string functions
-	dpkg_locales_init;
-
 	cisdigit;
 
 	str_match_end;